2025 is shaping up to be a defining year for hydrogen innovation. Around the world, experts, governments, and industry leaders are coming together to explore the future of clean energy through hydrogen and related technologies. From cutting-edge fuel cell breakthroughs to large-scale infrastructure projects, this year’s global events are showcasing hydrogen’s growing role in the clean energy transition.
Below, you’ll find a comprehensive table of all major hydrogen-related conferences, expos, summits, and forums happening worldwide in 2025. Whether you’re a researcher, investor, policymaker, or entrepreneur, these events offer invaluable insights, networking opportunities, and a front-row seat to the evolution of a hydrogen-powered future.
| TITLE | DATE | COUNTRY | CITY | ONLINE | LINK |
| SUSTAINABILITY FORUM MIDDLE EAST – MOBILIZING ACTION AND INVESTMENT FOR CLIMATE AND ENERGY RESILIENCE | 01-28-2025 | Kingdom of Bahrain | Manama | No | https://sustainmideast.com/ |
| 4TH EUROPEAN CARBON CAPTURE, UTILIZATION AND STORAGE 2025 | 01-30-2025 | Netherlands | Amsterdam | No | https://ccus-carbon-capture.com/ |
| OIL AND GAS DECARBONISATION CONGRESS – REIMAGINE THE FUTURE OF ENERGY (DECARBON2025) | 02-10-2025 | Germany | Berlin | No | https://decarboncongress.com/ |
| 6TH UK CCUS & HYDROGEN DECARBONISATION SUMMIT | 02-11-2025 | United Kingdom | Leeds | No | https://chameleonevents.co.uk/events/6th-uk-ccus-hydrogen-decarbonisation-summit/ |
| CARBON CAPTURE & STORAGE WEBINAR WEEK | 02-11-2025 | – | – | Yes | https://www.rivieramm.com/events/ |
| ROLLING STOCK FORUM 2025 | 02-12-2025 | United Kingdom | London | No | https://waterfront.eventscase.com/EN/rollingstock25 |
| POWERGEN INTERNATIONAL – DESTINATION 2050 | 02-13-2025 | USA | Texas, Dallas | No | https://www.powergen.com/welcome |
| EUROPEAN BATTERY VALUE CHAIN 2025 | 02-17-2025 | Germany | Berlin | No | https://european-battery-value-chain.com/ |
| WORLD MARITIME FORUM | 02-18-2025 | Denmark | Copenhagen | No | https://worldmaritime-forum.com/ |
| GREEN TRANSFORMATION WEEK EXPO | 02-19-2025 | Japan | Tokyo | No | https://www.decarbonization-expo.jp/hub/en-gb.html |
| CEMENT DECARBONISATION ONLINE 2025 | 02-19-2025 | – | – | Yes | https://www.wplgroup.com/aci/event/cement-decarbonisation-online/ |
| NW NATURAL AND MODERN HYDROGEN: DECARBONIZING METHANE TO ACCELERATE THE CLEAN ENERGY TRANSITION WEBINAR | 02-20-2025 | – | – | Yes | https://www.nwga.org/event-details/nw-natural-and-modern-hydrogen-decarbonizing-methane-to-accelerate-the-clean-energy-transition |
| INTERNATIONAL CONGRESS ON SUSTAINABILITY SCIENCE & ENGINEERING (ICOSSE ’25) | 02-20-2025 | New Zealand | Auckland | No | https://icosse.org/2025 |
| INTERNATIONAL ENERGY WEEK | 02-25-2025 | United Kingdom | London | No | https://www.ieweek.co.uk/ |
| DECARB CONNECT NORTH AMERICA | 02-25-2025 | USA | Texas, Houston | No | https://decarbconnectnorthamerica.com/ |
| 2ND ANNUAL ELECTRIC VEHICLE BATTERY RECYCLING FORUM | 02-26-2025 | Netherlands | Amsterdam | No | https://www.leadventgrp.com/events/2nd-annual-electric-vehicle-battery-and-recycling-forum/details |
| WORLD SUSTAINABLE AVIATION FUEL FORUM – UNITED FOR GREEN SKIES: PATHWAYS TO DECARBONIZATION AND NET ZERO AVIATION | 02-26-2025 | Netherlands | Amsterdam | No | https://www.leadventgrp.com/events/world-sustainable-aviation-fuel-forum/details |
| 5TH H2 FORUM 2025 | 03-04-2025 | Germany | Berlin | Yes | https://www.h2-forum.eu/ |
| ENGINEERING A HYDROGEN ECONOMY 2025 | 03-04-2025 | United Kingdom | Birmingham | No | https://eventsportal.imeche.org/event/sessions?id=Engineering_Challenges_in_the_Hydrogen_Economy3289865147 |
| 6TH BUSINESS SUMMIT GO CIRCULAR – UTILISING ENABLERS AND BREAKING BARRIERS TO ACHIEVE PLASTIC CIRCULARITY | 03-04-2025 | Netherlands | Rotterdam | No | https://globuc.com/go-circular/ |
| F+L WEEK 2025 CONFERENCE & EXHIBITION – THEME “ENERGIZING TOMORROW: PIONEERING SUSTAINABLE SOLUTIONS IN FUELS AND LUBRICANTS” | 03-05-2025 | United Kingdom | London | No | https://efwconference.com/2025/en/page/home |
| HYDROGEN FOR SUSTAINABLE MOBILITY FORUM | 03-11-2025 | Italy | Torino | No | https://saetorinogroup.org/hydrogen-for-sustainable-mobility-forum-2/ |
| 8TH INTERNATIONAL FEV CONFERENCE 2025 – ZERO CO2 MOBILITY & ENERGY CONFERENCE 2025 | 03-12-2025 | Germany | Aachen | No | https://www.fev.com/en/zero-co%E2%82%82-mobility-energy-conference-2025-2/ |
| RENMAD HIDROGENO 2025 | 03-12-2025 | Spain | Zaragoza | No | https://renmad.com/hidrogeno/en/ |
| 2ND ANNUAL EXCELLENCE IN GREEN HYDROGEN PRODUCTION AND OPERATIONS FORUM | 03-13-2025 | Germany | Berlin | No | https://tbmgroup.eu/etn/2nd-annual-excellence-in-green-hydrogen-production-and-operations-forum/ |
| F+L WEEK 2025 CONFERENCE & EXHIBITION – THEME “ENERGIZING TOMORROW: PIONEERING SUSTAINABLE SOLUTIONS IN FUELS AND LUBRICANTS” | 03-13-2025 | Indonesia | Bali | No | https://www.fuelsandlubes.com/fl-week/ |
| EUROPEAN CO2 SUMMIT 2025 | 03-17-2025 | Netherlands | Rotterdam | No | https://www.gasworldconferences.com/conference/european-co2-summit-2025/ |
| GLOBAL DECARBONIZATION EXPO | 03-19-2025 | France | Paris | No | https://globaldecarbonizationexpo.com/ |
| 3RD EUROPEAN AUTOMOTIVE DECARBONIZATION AND SUSTAINABILITY SUMMIT 2025 | 03-19-2025 | Germany | Dusseldorf | No | https://www.ecvinternational.com/e/12-osvjq5/the-3rd-european-automotive-decarbonization-and-sustainability-summit-2025 |
| EUROPEAN COMMERCIAL VEHICLE DECARBONIZATION AND SUSTAINABILITY SUMMIT 2025 | 03-19-2025 | Germany | Dusseldorf | No | https://www.ecvinternational.com/e/14-0vseiy/european-commercial-vehicle-decarbonization-and-sustainability-summit-2025 |
| EUROPEAN AUTOMOTIVE CIRCULAR ECONOMY SUMMIT 2025 | 03-19-2025 | Germany | Dusseldorf | No | https://www.ecvinternational.com/e/11-9sdpcs/european-automotive-circular-economy-summit-2025 |
| 24TH INTERNATIONAL AUTOMOBILE RECYCLING CONGRESS (IARC 2025) | 03-19-2025 | Belgium | Antwerp | No | https://events.icm.ch/event/IARC2025/iarc-2025 |
| ADVANCED MOBILITY FUELS SUMMIT USA 2025 | 03-20-2025 | USA | Michigan | No | https://www.itbgroup.com/conference-schedule |
| EV BATTERY RECYCLING & REUSE 2025 EXHIBITION AND CONFERENCE | 03-24-2025 | USA | Michigan, Detroit | No | https://www.usa.ev-battery-recycling.com/ |
| DECARB CONNECT UK 2025 | 03-25-2025 | United Kingdom | Liverpool | No | https://decarbconnectuk.com/ |
| 3RD EUROPEAN GREEN STEEL SUMMIT 2025 | 03-25-2025 | Germany | Dusseldorf | No | https://www.ecvinternational.com/e/13-twyoqd/3rd-european-green-steel-summit-2025 |
| 2ND ANNUAL NON-ROAD MOBILE MACHINERY ELECTRIFICATION AND DECARBONIZATION FORUM | 03-26-2025 | Netherlands | Amsterdam | No | https://www.leadventgrp.com/events/2nd-annual-non-road-mobile-machinery-electrification-and-decarbonization-forum/details |
| WORLD HYDROGEN NORTH AMERICA | 03-31-2025 | USA | Texas | No | https://www.worldhydrogennorthamerica.com/event/82a375c5-cae8-42c2-a9fc-3fa8127d6994/home |
| 3RD ANNUAL ELECTRIC AIRCRAFT 2025 | 03-31-2025 | USA | Orange County, California | No | https://www.electric-aircraft-conference.com/ |
| 5TH BUSINESS GO NET-ZERO CARBON ENERGY SUMMIT CENTRAL AND EASTERN EUROPE | 04-01-2025 | Hungary | Budapest | No | https://globuc.com/go-net-zero-energy/ |
| POSITIONING HYDROGEN CONFERENCE 2025 | 04-02-2025 | Australia | Melbourne | No | https://hydrogenconferenceaustralia.com/index.php |
| MARITIME DECARBONISATION CONFERENCE, ASIA 2025 | 04-02-2025 | Singapore | – | No | https://www.rivieramm.com/events/maritime-decarbonisation-conference-asia-2025 |
| EUROPEAN CONFERENCE GREEN MARINE TRANSPORT | 04-02-2025 | Germany | Hamburg | No | https://fortesmedia.com/green-marine-transport-2025%2C4%2Cen%2C2%2C1%2C108.html |
| MARINE PROPULSION: FUELS WEBINAR WEEK 2025 | 04-07-2025 | – | Riviera | Yes | https://www.rivieramm.com/events/ |
| RENMAD BRASIL 2025 – HOW TO PLAN, DESIGN, BUILD, AND OPERATE CLEAN ENERGY STORAGE AND HYDROGEN PROJECTS IN BRAZIL | 04-08-2025 | Brazil | Sao Paulo | No | https://renmad.com/brasil/ |
| MARINE PROPULSION: FUELS WEBINAR WEEK 2025 – LNG AS A MARINE FUEL: BALANCING EMISSIONS REDUCTION WITH LONG-TERM DECARBONISATION GOALS | 04-08-2025 | – | – | Yes | https://rivieramaritimemedia.clickmeeting.com/lng-as-a-marine-fuel-balancing-emissions-reduction-with-long-term-decarbonisation-goals/register |
| 5TH GLOBAL HYDROGEN FORUM | 04-09-2025 | Spain | Barcelona | No | https://lng-global.com/ |
| INDUSTRIAL DECARBONISATION EUROPE 2025 | 04-09-2025 | Netherlands | Amsterdam | No | https://events.reutersevents.com/energy-transition/industry-europe |
| MARINE PROPULSION: FUELS WEBINAR WEEK 2025 – BIOFUEL’S BALANCING ACT: COMPLIANCE, COMPETITIVENESS, AND CARBON REDUCTION UNDER FUELEU MARITIME | 04-11-2025 | – | – | Yes | https://rivieramaritimemedia.clickmeeting.com/biofuel-s-balancing-act-compliance-competitiveness-and-carbon-reduction-under-fueleu-maritime/register |
| 35TH CRC REAL WORLD EMISSIONS WORKSHOP | 04-13-2025 | USA | Long Beach, California | No | https://crcao.org/35th-crc-real-world-emissions-workshop/ |
| ICHPS 2025: 19. INTERNATIONAL CONFERENCE ON HYDROGEN PRODUCTION AND STORAGE | 04-17-2025 | – | – | Yes | https://waset.org/hydrogen-production-and-storage-conference-in-april-2025-in-marrakesh |
| THE NORTH SEA DECARBONISATION CONFERENCE | 04-23-2025 | United Kingdom | London | No | https://www.the-eic.com/Events |
| 9TH EDITION GREEN HYDROGEN SUMMIT | 04-29-2025 | Netherlands | Amsterdam | No | https://www.leadventgrp.com/events/9th-edition-green-hydrogen-forum/details |
| 6TH GREEN HYDROGEN SUMMIT EUROPE 2025 | 04-29-2025 | Portugal | Lisbon | No | https://greenhydrogenuk.solarenergyevents.com/ |
| HYDROGEN 2025 | 04-29-2025 | Netherlands | Amsterdam | No | https://events.reutersevents.com/energy-transition/industry-europe |
| 2025 NORTH AMERICAN HYDROGEN ENGINE CONFERENCE | 05-01-2025 | Usa | Riverside, California | No | https://h2engine-alliance.org/2025-conference/ |
| GLOBAL MARITIME DECARBONISATION SUMMIT 2025 | 05-06-2025 | Netherlands | Amsterdam | No | https://www.oilandgasiq.com/events-lngbunkering |
| NET ZERO USA 2025 | 05-06-2025 | USA | California, San Diego | No | https://events.reutersevents.com/sustainability-usa |
| CALIFORNIA ENERGY TRANSITION SUMMIT 2025 | 05-06-2025 | USA | Sacramento, California | No | https://infocastinc.com/event/ca-energy-transition |
| PLANNING FOR HYDROGEN INFRASTRUCTURE 2025 | 05-08-2025 | United Kingdom | London | No | http://planningforhydrogen.co.uk/ |
| ARGUS GREEN MARINE FUELS CONFERENCE | 05-12-2025 | Belgium | Antwerp | No | https://www.argusmedia.com/en/events/conferences/green-marine-fuels-conference |
| ARGUS EUROPE CARBON CONFERENCE | 05-12-2025 | France | Nice | No | https://www.argusmedia.com/en/events/conferences/europe-carbon-conference |
| ALL-ENERGY EXHIBITION AND CONFERENCE – ENGINEERING A NET ZERO FUTURE | 05-14-2025 | Scotland | Glasgow | No | https://www.all-energy.co.uk/en-gb.html |
| HYDROGEN INTERNAL COMBUSTION ENGINES FOR INTENSIVE USE APPLICATIONS – STUDY DAY | 05-15-2025 | France | Paris | No | https://www.sia.fr/evenements/379-hydrogen |
| CLEANPOWER 2025 CONFERENCE & EXHIBITION | 05-19-2025 | Usa | Phoenix, Arizona | No | https://cleanpower.org/expo/ |
| TRANSPORTATION ENERGY INSTITUTE ANNUAL CONFERENCE | 05-19-2025 | USA | San Atonio, Texas | No | https://www.transportationenergy.org/events/annualmeeting/fuels2025 |
| 31ST CIMAC WORLD CONGRESS ON COMBUSTION ENGINE TECHNOLOGY FOR SHIP PROPULSION, POWER GENERATION, RAIL TRACTION | 05-19-2025 | Switzerland | Zurich | No | https://www.cimaccongress.com/ |
| WORLD HYDROGEN SUMMIT & EXHIBITION 2025 | 05-20-2025 | Netherlands | Rotterdam | No | https://www.world-hydrogen-summit.com/ |
| ICHPS 2025: 19. INTERNATIONAL CONFERENCE ON HYDROGEN PRODUCTION AND STORAGE | 05-20-2025 | Germany | Berlin | Yes | https://waset.org/hydrogen-production-and-storage-conference-in-may-2025-in-berlin |
| NORTH AMERICAN GREEN ALUMINIUM SUMMIT 2025 | 05-20-2025 | USA | Chicago, Illinois | No | https://www.ecvinternational.com/NAGAS2025?cci=21 |
| CO2 CAPTURE, STORAGE & REUSE 2025 CONFERENCE | 05-21-2025 | Denmark | Copenhagen | No | https://fortesmedia.com/co2-capture-storage-reuse-2025%2C4%2Cen%2C2%2C1%2C106.html |
| OFF-HIGHWAY POWERTRAIN & FUELS USA 2025 | 05-21-2025 | USA | Chicago, Illinois | No | https://conferences.emissionsanalytics.com/offhighway-us25/ |
| 2ND ASIA SUPPLY CHAIN DECARBONIZATION AND SUSTAINABILITY SUMMIT 2025 | 05-27-2025 | Singapore | – | No | https://www.ecvinternational.com/ASCDSS2025?cci=21 |
| 3RD ANNUAL ADVANCED BIOFUELS FORUM | 05-28-2025 | The Netherlands | Amsterdam | No | https://www.leadventgrp.com/events/3rd-annual-advanced-biofuels-forum/details |
| BIOGAS & BIOMETHANE WORLD SUMMIT | 05-28-2025 | Netherlands | Amsterdam | No | https://www.leadventgrp.com/events/biogas-biomethane-world-summit/details |
| ARGUS ASIA CARBON CONFERENCE | 05-29-2025 | Malaysia | Kuching | No | https://www.argusmedia.com/en/events/conferences/asia-carbon-conference |
| ARGUS CLEAN AMMONIA ASIA CONFERENCE | 06-02-2025 | Japan | Tokyo | No | https://www.argusmedia.com/en/events/conferences/clean-ammonia-asia-conference |
| 9TH ANNUAL SUMMIT GO DIGITAL ENERGY – INNOVATE, DECARBONISE, CHANGE: DRIVING DIGITAL TRANSFORMATION WITH AI AND DATA | 06-03-2025 | Netherlands | Amsterdam | No | https://globuc.com/digitalsolutions/ |
| ROAD TRANSPORT USA 2025 | 06-03-2025 | USA | California, San Diego | No | https://events.reutersevents.com/automotive/roadtransport |
| THE FUTURE OF NATURAL HYDROGEN NORTH AMERICA 2025 | 06-04-2025 | Usa | Texas | No | https://www.wplgroup.com/aci/event/future-natural-hydrogen-north-america/ |
| UK PORTS CONFERENCE 2025 | 06-04-2025 | United Kingdom | London | No | https://www.ukportsconference.co.uk/ |
| 37TH INTERNATIONAL CONGRESS – SIA POWERTRAIN 2025 | 06-11-2025 | France | Port Marly | No | https://www.sia.fr/evenements/376-powertrain |
| 6TH EUROPEAN CONFERENCE HYDROGEN & P2X 2025 | 06-11-2025 | Denmark | Copenhagen | No | https://fortesmedia.com/hydrogen-p2x-2025,4,en,2,1,107.html |
| NETZERO LIVE 2025 CONFERENCE + EXHIBITION | 06-11-2025 | United Kingdom | Hull | No | https://www.foresight.events/netzero |
| SHIP.ENERGY SUMMIT 2025 | 06-11-2025 | Spain | Barcelona | No | https://www.petrospot.com/events/ses25 |
| ROADMAP FOR THE EUROPEAN LUBRICANTS INDUSTRY – LUBE CONFERENCE 2025 | 06-11-2025 | United Kingdom | London | No | https://www.lube-media.com/lube-roadmap-conference-2025/ |
| CHINA SUSTAINABLE AVIATION FUEL SUMMIT 2025 | 06-11-2025 | China | Shanghai | No | – |
| CHINA GREEN SHIPPING AND FUEL SUMMIT 2025 | 06-12-2025 | China | Shanghai | No | – |
| ELECTROLYZERS NORTH AMERICA SUMMIT | 06-16-2025 | Canada | Toronto | No | https://redcabin.de/summits/electrolyzers-north-america/ |
| CONNECTING GREEN HYDROGEN EUROPE 2025 | 06-17-2025 | Spain | Madrid | No | https://www.connectinghydrogeneurope.com/ |
| CO2 SHIPPING & TERMINALS CONFERENCE 2025 | 06-17-2025 | United Kingdom | London | No | https://www.rivieramm.com/events/co2-shipping-amp-terminals-conference-2025 |
| 7TH JAPAN ENERGY SUMMIT & EXHIBITION | 06-18-2025 | Japan | Tokyo | No | https://www.japanenergyevent.com/ |
| 3RD WORLD HYDROGEN DERIVATIVES – FROM AMBITION TO ACTION: BUILDING THE HYDROGEN DERIVATIVES ECOSYSTEM | 06-24-2025 | Netherlands | Amsterdam | No | https://www.worldhydrogenderivatives.com/event/a4942626-baf8-4f53-8713-15d300cb7a34/summary |
| ELECTRIC & HYBRID MARINE WORLD EXPO EUROPE 2025 | 06-24-2025 | Netherlands | Amsterdam | No | https://www.electricandhybridmarineworldexpo.com/en/ |
| 16TH BIOFUELS INTERNATIONAL CONFERENCE & EXPO 2025 | 06-24-2025 | Belgium | Brussels | No | https://biofuels-news.com/conference/about-biofuels-conference-expo/ |
| SUSTAINABLE AVIATION FUEL SUMMIT 2025 | 06-24-2025 | Belgium | Brussels | No | https://biofuels-news.com/conference/sustainableaviationfuels/about/ |
| INTERNATIONAL BIOGAS CONGRESS & EXPO 2025 | 06-24-2025 | Belgium | Brussels | No | https://bioenergy-news.com/conference/about-biogas/ |
| 6TH DECARBONIZING SHIPPING FORUM | 06-25-2025 | Germany | Hamburg | No | https://decarbonizingforum.com/ |
| GLOBAL ENERGY TRANSITION 2025 | 06-25-2025 | USA | New York | No | https://events.reutersevents.com/energy-transition/global-energy-transition-new-york |
| GREEN HYDROGEN SUMMIT UK & IRELAND | 07-01-2025 | United Kingdom | London | No | https://greenhydrogenuk.solarenergyevents.com/ |
| NEW MATERIALS FOR FUTURE MOBILITY (NeMMo 2025) | 07-02-2025 | France | Rennes | No | https://www.sia.fr/evenements/377-nemmo-2025 |
| CO2 SHIPPING, TERMINALS & CCS CONFERENCE, ASIA 2025 | 07-15-2025 | Singapore | – | No | https://www.rivieramm.com/keep-in-touch-co2-shipping–ccs-conference-asia |
| CO2 SHIPPING, TERMINALS & CCS CONFERENCE, EUROPE 2025 | 07-16-2025 | Italy | Milan | No | https://www.rivieramm.com/events/ |
| CONNECTING GREEN HYDROGEN APAC 2025 | 07-17-2025 | Australia | Melbourne | No | https://www.connectinghydrogenapac.com/ |
| ICHPS 2025: 19. INTERNATIONAL CONFERENCE ON HYDROGEN PRODUCTION AND STORAGE | 07-19-2025 | Finland | Helsinki | Yes | https://waset.org/hydrogen-production-and-storage-conference-in-july-2025-in-helsinki |
| ICHS 2025: 19. INTERNATIONAL CONFERENCE ON HYDROGEN SAFETY | 08-23-2025 | Cyprus | Nicosia | Yes | https://waset.org/hydrogen-safety-conference-in-august-2025-in-nicosia |
| NET ZERO EXPO 2025 – SYDNEY | 08-27-2025 | Australia | Sydney | No | https://netzeroexpo.com.au/ |
| HYDROGEN AMERICAS SUMMIT 2025 | 09-03-2025 | Usa | Washington, DC | No | https://www.world-hydrogen-summit.com/americas/en-gb.html |
| CO2 SHIPPING, TERMINALS & CCS CONFERENCE, EUROPE 2025 | 09-08-2025 | Italy | Milan | No | https://www.rivieramm.com/events/ |
| ICHPS 2025: 19. INTERNATIONAL CONFERENCE ON HYDROGEN PRODUCTION AND STORAGE | 09-09-2025 | Japan | Tokyo | Yes | https://waset.org/hydrogen-production-and-storage-conference-in-september-2025-in-tokyo |
| ARGUS SUSTAINABLE MARINE FUELS CONFERENCE | 09-10-2025 | Usa | Houston, Texas | No | https://www.all-energy.com.au/en-gb.html |
| MARINE ENERGY TRANSITION FORUM 2025 | 09-15-2025 | United Kingdom | London | No | https://www.petrospot.com/events/ |
| ICHPS 2025: 19. INTERNATIONAL CONFERENCE ON HYDROGEN PRODUCTION AND STORAGE | 09-16-2025 | Switzerland | Zurich | Yes | https://waset.org/hydrogen-production-and-storage-conference-in-september-2025-in-zurich |
| ICHEFCT 2025: 19. INTERNATIONAL CONFERENCE ON HYDROGEN ENERGY AND FUEL CELL TECHNOLOGY | 09-16-2025 | Netherlands | Amsterdam | No | https://waset.org/hydrogen-energy-and-fuel-cell-technology-conference-in-september-2025-in-amsterdam |
| NET ZERO EXPO 2025 – MELBOURNE | 09-17-2025 | Australia | Melbourne | No | https://netzeroexpo.com.au/ |
| 2ND GLOBAL SUMMIT ON CLIMATE CHANGE & ENVIRONMENTAL SUSTAINABILITY | 09-18-2025 | USA | California, Los Angeles | No | https://climatechangeconferences.org/ |
| 2ND ANNUAL WORLD ELECTROLYSIS CONGRESS – NORTH AMERICA – UNLOCKING THE FUTURE: POWERING ELECTROLYZER TECHNOLOGY IN NORTH AMERICA | 09-22-2025 | Usa | Illinois, Chicago | No | https://www.worldelectrolysisnorthamerica.com/event/08e1fb37-771f-44c6-9690-81cfcee93066/summary |
| NORTH AMERICAN CO2 SUMMIT 2025 | 09-22-2025 | USA | Colorado, Denver | No | https://www.gasworldconferences.com/conference/north-american-co2-summit-2025/ |
| MARITIME DECARBONISATION CONFERENCE, EUROPE 2025 | 09-23-2025 | Netherlands | Amsterdam | No | https://www.rivieramm.com/events/ |
| 3RD EUROPEAN CONGRESS ON RENEWABLE ENERGY AND SUSTAINABLE DEVELOPMENT (ENERGY TRENDS 2025) | 09-29-2025 | Portugal | Lisbon | No | https://renewableenergyconferences.com/ |
| 3RD EUROPEAN CONGRESS ON RENEWABLE ENERGY AND SUSTAINABLE DEVELOPMENT (ENERGY TRENDS 2025) | 09-29-2025 | Portugal | Lisbon | No | https://renewableenergyconferences.com/ |
| SUSTAINABILITY IN PRODUCT AND PRODUCTION ENGINEERING 2025 | 09-30-2025 | Germany | Bad Nauheim | No | https://www.automotive-circle.com/events/sustainability-in-product-and-production-engineering-2025/ |
| MARITIME DECARBONISATION CONFERENCE, EUROPE 2025 | 09-30-2025 | Netherlands | Amsterdam | No | https://events.rivieramm.com/event/MDC-Europe/-1 |
| 6TH ANNUAL WORLD HYDROGEN WEEK 2025 | 10-06-2025 | Denmark | Copenhagen | No | https://www.worldhydrogenweek.com/event/ba841a40-03fe-4766-ba77-d09211e6f2e0/home |
| 4TH EUROPE CCUS & HYDROGEN DECARBONISATION SUMMIT | 10-07-2025 | Belgium | Brussels | No | https://www.all-energy.com.au/en-gb.html |
| NON-ROAD POWERTRAIN & FUELS EUROPE 2025 | 10-07-2025 | Germany | Munich | No | https://conferences.emissionsanalytics.com/nonroad-eu25/index.html |
| MARITIME HYBRID, ELECTRIC & HYDROGEN FUEL CELLS CONFERENCE 2025 | 10-14-2025 | Norway | Bergen | No | https://www.rivieramm.com/events/maritime-hybrid-electric-amp-hydrogen-fuel-cells-conference-2025 |
| SUSTAINABLE ROAD TRANSPORT EUROPE 2025 | 10-15-2025 | Netherlands | Amsterdam | No | https://events.reutersevents.com/automotive/sustainabletransport |
| ZERO CARBON POWER | 10-20-2025 | USA | Texas, Houston | No | https://infocastinc.com/event/zero-carbon-power |
| ALL-ENERGY AUSTRALIA 2025 | 10-29-2025 | Australia | Melbourne | No | https://www.all-energy.com.au/en-gb.html |
| ICHS 2025: 19. INTERNATIONAL CONFERENCE ON HYDROGEN SAFETY | 11-08-2025 | Turkey | Istanbul | Yes | https://waset.org/hydrogen-safety-conference-in-november-2025-in-istanbul |
| 2025 JOINT CONFERENCE – RAIL RESEARCH WEEK | 11-17-2025 | USA | Colorado | No | https://railresearchweek.com/ |
| 5TH ANNUAL ASIA-PACIFIC HYDROGEN SUMMIT & EXHIBITION | 11-20-2025 | Australia | Sydney | No | https://www.world-hydrogen-summit.com/asia-pacific/en-gb.html |
| THE 11TH INTERNATIONAL CONFERENCE ON MODELING AND DIAGNOSTICS FOR ADVANCED ENGINE SYSTEMS – COMODIA 2025 | 11-20-2025 | Japan | Chiba | No | https://www.jsme.or.jp/conference/comodia2025/index.html |
| 2025 SUSTAINABLE ENERGY & POWERTRAINS – TOWARDS CO2-NEUTRAL MOBILITY | 11-25-2025 | Germany | Stuttgart | No | https://www.fkfs-veranstaltungen.de/veranstaltungen/sustainable-energy-powertrains |
| 46TH MOTORSHIP PROPULSION & FUTURE FUELS CONFERENCE 2025 | 11-25-2025 | Germany | Hamburg | No | https://www.motorship.com/propulsion-and-future-fuels-conference |
| 2025 CONFERENCE ON POWERTRAINS WITH RENEWABLE ENERGY CARRIERS | 11-25-2025 | Germany | Stuttgart | No | https://www.fkfs-veranstaltungen.de/en/events/conference-on-powertrains-with-renewable-energy-carriers |
| INDUSTRIAL NET ZERO AND DECARBONISATION EUROPE CONFERENCE | 11-25-2025 | The Netherlands | Amsterdam | No | https://www.leadventgrp.com/events/industrial-net-zero-and-decarbonisation-europe/details |
| THE APAC CCUS & HYDROGEN DECARBONISATION SUMMIT | 12-02-2025 | Taiwan | Taipei City | No | https://chameleonevents.co.uk/events/6th-uk-ccus-hydrogen-decarbonisation-summit/ |
| ARGUS CLEAN AMMONIA EUROPE CONFERENCE | 12-02-2025 | Netherlands | Rotterdam | No | https://www.argusmedia.com/en/events/conferences/clean-ammonia-europe-conference |
| MARITIME DECARBONIZATION CONFERENCE, AMERICAS 2025 | 12-04-2025 | USA | Houston, Texas | No | https://www.rivieramm.com/events/ |
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